.full {width: 100%;padding: 0;margin: 0;}
section {width: 100%;}
.liucheng{font-size: 0;}
nav{width: 100%;padding: 0.15em 0;font-size: 1.5em;color: #343434;font-weight: bold;text-align: center;}    .part-3{width:100%;height:auto;background:#ffffff;margin:0 auto;text-align:center;padding-top:5%;padding-bottom:2%;}
.part-3 nav span{color:#e60012;}
.part-3 .fenlei{width:100%;text-align:center;margin-top:3.5%;margin-bottom:4%;display: flex;justify-content: space-around}
.part-3 .fenlei a{display:block;padding:0.7em 0;text-align:center;color:#ffffff;width:24%;
font-weight:bold;border-radius:10%;background: linear-gradient(to right, #fa5a52 0%,#fa5a52 100%);box-shadow:2px 3px 4px #d3d3d3;}
.part-3 .fenlei a img{width:52%;}
.part-3 .fenlei a p{margin-top:1%;font-size:1.1em;letter-spacing:1px;}
.part-3 ul{width:90%;height:auto;margin:0 auto;margin-top:5.0%;}
.part-3 ul li{width:29%;margin-left:2%;margin-right:2%;float:left;margin-bottom:4%;height:auto;}
.part-3 ul li:nth-child(4){width:29%;margin-left:20%;margin-right:2%;float:left;margin-bottom:4%;height:auto;}
.part-3 ul li a{display:block; background: linear-gradient(to right, #fa5a52 0%,#fa5a52 100%);margin-bottom:2%;border-radius:4px;
font-size:1em;color:#ffffff;margin:0 auto;text-align:center;font-weight:600;padding:0.6em 0;box-shadow:2px 3px 4px #d3d3d3;position:relative;}
.part-3 ul li a img{display:inline-block;width:15%;position:absolute;right:0%;top:-1%;}    
.xian {width: 90%;height: 2px;border-bottom: 1.1px dashed #fa5a52;margin: 0 auto;margin-top: 2%;margin-bottom: 2%;
}
#btn {width: 66%;padding: 0.3em 0;border-radius: 5px;margin: 0 auto;font-size: 1.2em;font-weight: bold;text-align: center;background: linear-gradient(to right, #fa5a52 0%,#fa5a52 100%);margin-top: 3%;color: white;border: 1px solid #fa5a52;}